Spiritus Mortis is renowned as a pioneer of doom metal in Finland, having established their foundation in the genre in 1987. As the first Finnish doom metal band, their sound is characterized by its heavy, slow riffs and melancholic atmosphere, drawing inspiration from the early works of Black Sabbath and interweaving their music with a blend of dark, profound themes and a touch of the supernatural.

Over the years, Spiritus Mortis has honed their craft, resulting in a robust discography that reflects their dedication to the doom metal scene. Their self-titled album "Spiritus Mortis" was a solid display of their style and set the stage for subsequent releases. Albums like "The God Behind the God" and "The Year is One" have further cemented their status by garnering critical acclaim and showcasing the band's ability to evolve within their genre while maintaining their signature sound. Their most recent release, "The Great Seal," persists in their tradition of eerie storytelling combined with relentless, heavy melodies. With a compilation release titled "Spiritism 2008-2017," Spiritus Mortis offers both long-time fans and newcomers a curated look into their prolific career, reiterating their status as standard-bearers of Finnish doom metal.